implement not to display broken revisions

apps/app/src/client/components/PageHistory/PageRevisionTable.tsx

@@ -21,6 +21,8 @@ type PageRevisionTableProps = {
   currentPagePath: string
 }
 
+const REVISION_BROKEN_BEFORE = new Date('2023-06-07T23:45:20.348+0000');
+
 export const PageRevisionTable = (props: PageRevisionTableProps): JSX.Element => {
   const { t } = useTranslation();
 
@@ -201,9 +203,17 @@ export const PageRevisionTable = (props: PageRevisionTableProps): JSX.Element =>
               const isOldestRevision = revision === oldestRevision;
               const latestRevision = revisions[0];
 
+              const formattedRevisionCreatedAt = new Date(revision.createdAt);
+
+              const isBrokenRevision = formattedRevisionCreatedAt < REVISION_BROKEN_BEFORE;
+
               // set 'true' if undefined for backward compatibility
               const hasDiff = revision.hasDiffToPrev !== false;
-              return renderRow(revision, previousRevision, latestRevision, isOldestRevision, hasDiff);
+
+              if (!isBrokenRevision) {
+                return renderRow(revision, previousRevision, latestRevision, isOldestRevision, hasDiff);
+              }
+              return;
             })
           }
         </tbody>